SE179005C1 - Valve device for regulating an inhalation gas stream to a patient - Google Patents

Valve device for regulating an inhalation gas stream to a patient

Info

Publication number
SE179005C1
SE179005C1 SE298958A SE298958A SE179005C1 SE 179005 C1 SE179005 C1 SE 179005C1 SE 298958 A SE298958 A SE 298958A SE 298958 A SE298958 A SE 298958A SE 179005 C1 SE179005 C1 SE 179005C1
Authority
SE
Sweden
Prior art keywords
valve
patient
opening
pressure
inlet
Prior art date
Application number
SE298958A
Other languages
Swedish (sv)
Inventor
G D Black
Original Assignee
British Oxygen Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Oxygen Co Ltd filed Critical British Oxygen Co Ltd
Publication of SE179005C1 publication Critical patent/SE179005C1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M16/0009—Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration
    • A61M16/0012—Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration by Venturi means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/206—Capsule valves, e.g. mushroom, membrane valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/207—Membrane valves with pneumatic amplification stage, i.e. having master and slave membranes
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/02—Valves
    • A62B9/022—Breathing demand regulators
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B21/00—Severing glass sheets, tubes or rods while still plastic
    • C03B21/02—Severing glass sheets, tubes or rods while still plastic by cutting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0075—Bellows-type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7782—With manual or external control for line valve

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Emergency Medicine (AREA)
  • Anesthesiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • General Engineering & Computer Science (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Mechanical Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)

Description

KLASS 30 k:13101 INT. KLASS A 61 m PATENTTID FRAN DEN 27 MARS 1958 BEVIIJAT DEN 15 FEBRUARI 1962 PUBLICERAT DEN 17 APRIL 1962 Ans. 2989/1958 den 27/3 1958Hdrtill en ritning THE BRITISH OXYGEN CO. LTD., LONDON, STORBRITANNIEN Ventilanordning for reglering av en inhalationsgasstriim till en patient TJppfinnare: GD Black Prioritet begard /rein den 24 april 1957 (Storbritariniem) Uppfinningen avser en ventilanordning for reglering av inhaleringsgas till en patient for anestesiandamal eller konstgjord andning. CLASS 30 k: 13101 INT. CLASS A 61 m PATENT PERIOD FROM MARCH 27, 1958 GRANTED ON FEBRUARY 15, 1962 PUBLISHED ON APRIL 17, 1962 Ans. 2989/1958 on 27/3 1958Hdrtill a drawing THE BRITISH OXYGEN CO. LTD., LONDON, UNITED KINGDOM Valve device for regulating an inhalation gas stream to a patient TJppfinnare: GD Black Priority requested / April 24, 1957 (Great Britain) The invention relates to a valve device for regulating inhalation gas to a patient for anesthesia purposes or artificial respiration.

Vid sadan behandling blir forfarandet for tillforsel av inhaleringsgas till patienten beroende pa patientens forrnaga respektive oformaga att spontant andas. Om patienten kan andas sjalv, är det lampligast att tillfora inhaleringsgasen i overensstammelse med patientens genom den egna andningen angivna behov, medan tillforseln av inhaleringsgas, forsavitt patienten lake kan andas utan hjalp, vanligen sker under overtryck under en inandningsf as i andningsperioden, varefter gastillfOrseln avsparras, och lungorna under en utandningsf as tommas till den umgivande atmosfaren. Varaktigheten hos varje f as kan vara automatiskt styrd, antingen i beroende av ett bestamt tidsschema eller i beroende av trycket i patientens lungor, eller ocksà kan den regleras manuellt, exempelvis genom att andningsmasken tas bort fran patientens ansikte under utandning sp erio den. In such treatment, the procedure for supplying inhaled gas to the patient depends on the patient's ability and inability to breathe spontaneously. If the patient can breathe on his own, it is most appropriate to supply the inhalation gas in accordance with the patient's needs specified by his own breathing, while the supply of inhalation gas, provided the patient can breathe without help, usually takes place under overpressure during an inhalation phase during the breathing period. , and the lungs during an exhalation phase are emptied into the surrounding atmosphere. The duration of each phase can be controlled automatically, either depending on a specific time schedule or depending on the pressure in the patient's lungs, or it can also be adjusted manually, for example by removing the respirator from the patient's face during exhalation.

Anordningar aro kanda medvilka man valvis kan astadkomma en inhaleringsgasstrom, antingen kontinuerligt under overtryck, Overtrycksandning, eller i beroende av patientens behov, behovsandning. Foreliggande uppfinning avser alt astalkomma en ventilanordning, vilken kan anvandas vid Adana andningsapparater for saval overtrycksandning som behovsandning. Devices are known which can optionally provide an inhalation gas stream, either continuously under overpressure, overpressure breathing, or depending on the patient's needs, needs breathing. The present invention relates to an astalcoma valve device which can be used in Adana breathing apparatus for both positive pressure breathing and demand breathing.

Nar ventilanordningen enligt foreliggande uppfinning anvandes for gasavgivning under overtryck, halles under utandningsfasen ett med ett tryckkansligt organ forenat ventilorgan i sadant 'age, att en med anordningen:s utlopp kommunicerande ventilOppning ar stangd och en till atmosfaren ledande kanal ar oppen pa grand av paverkan pa. det tryckkansliga organet av det tryck hos inhalationsgasen, som upptrader i en till anordningen horande inloppskammare, varigenom patienten kan utandas mot atmosfarstrycket. Vid inandningsfasen Ewes ventilorganet medelst manuellt paverkade medel till ett lage, dar detsamma oppnar ventiloppningen och stanger kanalen, varigenom inhalationsgas under tryck tillfores patienten. Vid anordningens anvandning for tillforsel av inhalationsgas i beroende av patientens behov forflyttas ventilorganet sa, att det oppnar ventiloppningen och stanger kanalen under paverkan av det undertqck, som uppstar vid patientens inandning, varefter det i patientens luftvagar uppbyggda trycket paverkar det tryckkansliga organet, som fi5rflyttas att stanga ventilOppningen och oppna kanalen under utandningsf asen. When the valve device according to the present invention is used for gas discharge under overpressure, during the exhalation phase a valve member connected to a pressure sensing member is held in such a way that a valve opening communicating with the device outlet is closed and a duct leading to the atmosphere is open due to the effect on . the pressure sensing means of the pressure of the inhalation gas occurring in an inlet chamber belonging to the device, whereby the patient can be exhaled against atmospheric pressure. During the inhalation phase, the Ewes valve means by means of manually actuated means to a bearing, where the same opens the valve opening and closes the channel, whereby inhaled gas under pressure is supplied to the patient. When the device is used for supplying inhalation gas depending on the patient's needs, the valve means is moved so that it opens the valve opening and closes the duct under the influence of the vacuum created by the patient's inhalation, after which the pressure built up in the patient's airways affects the pressure sensing means. close the valve opening and open the channel during the exhalation phase.

Ventilanordningen ar foljaktligen lika ldmplig att anvandas for tillforsel av inhalationsgas under tryck som for tillforsel i beroende av patientens behov. Ventilanordningen behiiver sahmda icke Andras eller omstallas vid overgang frail ett driftfOrhallande till ett annat. The valve device is consequently as suitable for use for the supply of inhaled gas under pressure as for the supply depending on the patient's needs. The valve device does not need to be repaired or remodeled at the time of transition from one operating condition to another.

Foreliggande uppfinning avser salunda en for reglering av en inhalationsgasstrom till en patient avsedd ventilanordning innefattande en inloppskammare, som Or fOrsedd med ett inlopp, avsett att anslutas till en andningsapparat for inhalationsgas med efter val kontinuerlig tillforsel av gas under Overtryck eller tillf5rsel i beroende av behovet hos patienten, och som Over en i en ventil ingaende oppning Or anslutbar till en utloppskammare med ett utlopp, som Or avsett att anslidas till en ansiktsmask eller annat medel fOr tillforsel av inhalationsgas till patienten, och med en kanal, som star i forbindelse med den omgivande atmosfaren Over en mot denna oppnande backventil. The present invention thus relates to a valve device for regulating an inhalation gas flow to a patient, comprising an inlet chamber, which is provided with an inlet, intended to be connected to a breathing apparatus for inhalation gas with a continuous supply of gas under pressure or supply depending on the need of the patient, and as an opening opening in a valve or connectable to an outlet chamber with an outlet, which is intended to be fitted to a face mask or other means for supplying inhalation gas to the patient, and with a channel, which communicates with the surrounding the atmosphere Over one against this opening non-return valve.

Uppfinningen kannetecknas i huvudsak darav att ett tryckkansligt organ, pa sin ena sida pOverkat av trycket i inloppskammaren och pa sin andra sida av atmosfartrycket, 2— — uppbar en i ventilen inghende ventilkropp, som i beroende av i in- och utloppskamrarna radande tryck stanger resp. Oppnar ventiloppningen resp. kanalen, och är anordnat med ett manoverdon, medelst -vilket ventilkroppen manuellt kan sa forflyttas, att ventiloppningen oppnas och kanalen stanges. The invention is mainly characterized by the fact that a pressure-sensing member, on its one side, is affected by the pressure in the inlet chamber and on its other side by the atmospheric pressure, 2— - carried a valve body included in the valve, which depending on the inlet and outlet chambers radiating pressure rods resp. Opens the valve opening resp. the channel, and is provided with an actuator, by means of which the valve body can be moved so manually that the valve opening is opened and the channel is closed.

Uppfinningen beskrives narmare i anslutning till i bifogade rituing visade utforings- exempel. Fig. 1 ãr ett snitt genom en ventil- anordning enligt uppfinningen avsedd att anvandas for oxygentillforsel till en patient med de rorliga delarna i ventilanordningen visade i de lagen, som komma ifraga ndr overtrycksandning skall genomfdras och innan andning- en borjar, fig. 2 samma anordning med de ror- liga delarna i de lagen de inta under inandningsfasen i en andningsperiod och fig. 3 an- ordningen under utandningsfasen. Fig. 4 vi- sar ett snitt genom en ventilanordning med nagot avvikande utforande, varvid de rorliga delarna dro -visade i de lagen de inta under utandningsfasen vid overtrycksandning och fig. 5 samma anordning med de rorliga delarna i de lagen de inta under inandningsfasen vid Overtrycksandning. The invention is described in more detail in connection with the embodiments shown in the accompanying drawing. example. Fig. 1 is a section through a valve device according to the invention intended to be used for supplying oxygen to a patient with the movable parts of the valve device are shown in the laws that apply to overpressure breathing shall be carried out and before breathing a starter, Fig. 2 the same device with the rudders parts of the layers they ingest during the inhalation phase during a breathing period and Fig. 3 the scheme during the exhalation phase. Fig. 4 vi- makes a section through a valve device with a slightly different design, the movable ones the parts are drawn in the layers they take in during the exhalation phase during overpressure breathing and Fig. 5 the same arrangement with the movable parts in the layers they take in during the inhalation phase during overpressure breathing.

I samtliga figurer ha motsvarande delar beteeknats med samma siffra. I fig. 1-3 visas anordningen bestftende av ett i huvudsak cylindriskt holje 10, soth är forsett med valvda gavlar 11 och 12. Holjet 10 är uppdelat i en inloppskammare 14 och en utloppskammare 15 av en vagg 13. Inloppskammaren 14 Sr fOrsedd med ett inlopp 16, avsett att anslutas till en andningsapparat, som alternativt kan leverera en kontinuerlig oxygenstrom under overtryck eller leverera i man av behov, varvid en gasstrOm avges, blott nar patienten gor en inandningsrorelse. H5ljet 10 är vidare forsett med ett till utloppskammaren 15 anslutet utlopp 17, vilket Sr avsett att anslutas till en ansiktsmask. Mellanvaggen 13 är fOrsedd med en central ventiloppning 18, Over vilken forbindeIse kan erhallas mellan inloppskammaren 14 och utloppskammaren 15. Ventiloppningen 18 ar forsedd med ett ventilsate 19 pa utIoppskammarsidan. In all figures, corresponding parts have been denoted by the same number. Figs. 1-3 show the device consisting of a substantially cylindrical housing 10, soth is provided with arched ends 11 and 12. The housing 10 is divided into an inlet chamber 14 and an outlet chamber 15 by a cradle 13. The inlet chamber 14 is provided with a inlet 16, intended to be connected to a breathing apparatus, which can alternatively deliver a continuous flow of oxygen under overpressure or deliver in man of need, whereby a gas flow is emitted only when the patient makes an inhalation movement. The cover 10 is further provided with an outlet 17 connected to the outlet chamber 15, which Sr is intended to be connected to a face mask. The intermediate cradle 13 is provided with a central valve opening 18, over which connection can be obtained between the inlet chamber 14 and the outlet chamber 15. The valve opening 18 is provided with a valve set 19 on the outlet chamber side.

Den mellanvaggen 13 motsatta sidan av inloppskammaren 14 utgores av ett bdjligt membran 20, det tryckkansliga organet, som -vid sin periferi Sr tatt infast mellan en inre flans 21 pa holjet 10 och en klamring 22, som pressas mot membrankanten av gaveln 11. Gaveln 11 ar fOrsedd med hal 23, sa att yttersidan av membranet 20 är utsatt for atmosfarstryck. The intermediate wall 13 opposite the side of the inlet chamber 14 is constituted by a flexible membrane 20, the pressure-sensing member, which at its periphery Sr is fixed between an inner flange 21 on the housing 10 and a clamping ring 22, which is pressed against the membrane edge of the end 11. The end 11 is provided with hall 23, so that the outside of the membrane 20 is exposed to atmospheric pressure.

Membranet 20 bar en centralt anordnad ventilspindel 24, som skjuter in genom yentiloppningen 18 och är fast ph membranet 20 medelst en ganged tapp 25, som ãr inskruvad i en manoverknapp 27. Brickor 28 och 29 aro anordnade mellan membranet 20 och en ansats pa ventilspindeln resp. mellan membranet och knappen 27, sa att lathing erhalles. Manoverknappen 27 ãr anordnad i ett hal i gavelstycket 11, sa att den kan tryckas iii med ett finger, varvid membranet 20 forskju- tes mot mellanvaggen 13. En kant 31 vid Oppningen 30 verkar som anslag for en flans 32 pa manoverknappen 27 for begransning av spindelns rdrelse utat. The diaphragm 20 carried a centrally located valve stem 24, which projects through the spring opening 18 and is fixed to the diaphragm 20 by means of a ganged pin 25, which is screwed into a control button 27. Washers 28 and 29 are arranged between the diaphragm 20 and a shoulder on the valve stem respectively. . between the diaphragm and the button 27, so that lathing is obtained. The control button 27 is arranged in a hall in the end piece 11, so that it can be pressed iii with one finger, whereby the membrane 20 is displaced against the intermediate wall 13. An edge 31 at the opening 30 acts as a stop for a flange 32 on the control button 27 for limiting the movement of the spindle outwards.

Utloppskammaren 15 star i forbindelse med ytteratmosfaren Over en kanal, som hildas av ett ror 33, som gar axiellt genom gavelstyc- ket 12. Roret 33 stracker sig mat mot mellanvaggen 13, och dess inre ande bildar ett ven- tilsate 34 pa kort avstand fran ventilsatet 19 i mellanvaggen 13. Roret 33 star i forbindelse med den omgivande atmosfaren Over en hack- ventil, som bestOr av ett ringformat sate 35 i roret 33 och en ventiltallrik 36, som halls mot satet 35 av en fjader 37 mellan ventiltallriken 36 och en i roret inskruvad, gangad propp 38. Mellan proppen och satet Sr roret forsett med Oppningar 39 till den omgivande atmosfaren. The outlet chamber 15 is connected to the outer atmosphere over a channel, which is hilled by a rudder 33 which extends axially through the end pieces. The rudder 33 extends food towards the intermediate wall 13, and its inner spirit forms a add 34 at a short distance from the valve set 19 in the intermediate wall 13. The rudder 33 stands in connection with the surrounding atmosphere Over a hack- valve, which consists of an annular sate 35 in tube 33 and a valve plate 36, which is held against the seat 35 by a spring 37 between the valve plate 36 and a plug plugged into the rudder 38. Between the plug and the seat The rudder is provided with openings 39 to the surrounding atmosphere.

Sam oven angivet stracker sig ventilspindeln 24 genom ventilOppningen 18 och skjuter in i utloppskammaren 15. Pa ventilspindein mellan ventilsatet 19 och ventilsatet 34 ãr en ph ventilspindeln forskjuthar ventiltallrik 40 anordnad, vars dimensioner aro sadana, att den kan verka som ventiltallrik vid bada ventilsatena. Ventiltallriken trycks i riktning mot en ph ventilspindeln 24 anordnad ansats 41, som Jigger ungefar mitt i -ventiloppningen 18, nar manoverknappen 27 är i kontakt med silt anslag 31, av en svag fjader 42, vilken Jigger an, dels mot ventiltallriken 41, dels mot en mutter 43 ph en gangad del 44 ph ventilspindeln 24. Spanningen hos fjadern 42 kan regleras med muttern 43, sh att ett sa stort tryck mellan ventiltallriken 40 och satet 19 erhalles, att ventiloppningen 18 kan hallas sluten mot gastrycket i inloppskammaren 14, nar andningsapparaten installs fiir gastillforsel under overtryck. As stated above, the valve stem 24 extends through the valve opening 18 and projects into the outlet chamber 15. On the valve stem between the valve set 19 and the valve set 34, a ph valve stem shifts valve plate 40 arranged, the dimensions of which are such that it can act as a valve plate in both valve sets. The valve plate is pushed in the direction of a shoulder 41 arranged on the pH valve stem 24, which jigger approximately in the middle of the valve opening 18, when the control button 27 is in contact with the silt stop 31, by a weak spring 42, which jigger, partly against the valve plate 41, partly against a nut 43 ph a stepped part 44 ph valve stem 24. The tension of the spring 42 can be regulated with the nut 43, so that such a large pressure between the valve plate 40 and the seat 19 is obtained that the valve opening 18 can be kept closed against the gas pressure in the inlet chamber 14. installs for gas supply under overpressure.

Vid anvandningen av ventilanordningen anslutes inloppet 16 till gaskallan och utloppet 17 till en ansiktsmask. Om patienten joke kan andas spontant, installs andningsapparaten for avgivning av en kontinuerlig oxygenstrom under overtryck. Gastrycket i inloppskammaren 14, som verkar ph membranet 20, skjuter detta utat, sa att manOverknappen 27 slar an mot flansen 31. Vid denna rorelse hos membranet 20 fares ventiltallriken 40 till ett lage, dar den ligger an mot ventilsatet 19 och darmed stater ventiloppningen, sh att tillforseln av gas till utloppet 17 bryts (fig. 1). When using the valve device, the inlet 16 is connected to the gas skull and the outlet 17 to a face mask. If the patient can breathe spontaneously, the ventilator is installed to deliver a continuous flow of oxygen under overpressure. The gas pressure in the inlet chamber 14, which acts on the diaphragm 20, pushes this outwards, so that the control knob 27 strikes against the flange 31. During this movement of the diaphragm 20, the valve plate 40 is moved to a position where it abuts the valve seat 19 and thus the valve opening. sh that the supply of gas to the outlet 17 is interrupted (Fig. 1).

Ansiktsmasken sattes darefter pa patienten och manoverknappen 27 trycks in manuellt, varvid membranet 20 presses mat sa langt, att ventiltallriken 40 Mrs mot ventilsatet 34 och armed stanger kanalen 33 till den omgivande atmosfaren, varefter gas kan strOmma Iran inloppskammaren 14 genom ventilappningen 18 och utloppskammaren 15 till patienten, samtidigt som gasen hindras att stromma genom kanalen 33 (fig. 2). - -3 Sedan patientens lungor fyllts, slapps manoverknappen 27 och membranet 20 kan rora sig utat under inverkan av gastrycket i in- loppskammaren, varvid ventiltallriken 40 Ater sluter ventiloppningen 18. Samtidigt Oppnas avloppet till den omgivande atmosfaren, och utandningen sker genom rOret 33, backventilen 36 och Mien 39 (fig. 3). The face mask was then applied to the patient and the control button 27 was pressed in manually, pressing the diaphragm 20 so far that the valve plate 40 Mrs against the valve seat 34 and armed closed the channel 33 to the surrounding atmosphere, after which gas could flow to the Iran inlet chamber 14 through the valve opening 18 and the outlet chamber 15. to the patient, while preventing the gas from flowing through the channel 33 (Fig. 2). - -3 After the patient's lungs are filled, the control button 27 is released and the diaphragm 20 can move under the influence of the gas pressure in the flue chamber, whereby the valve plate 40 again closes the valve opening 18. Simultaneously opens the drain to the surrounding atmosphere, and the exhalation takes place through the tube 33, the non-return valve 36 and the Mien 39 (Fig. 3).

Detta farlopp upprepas periodvis, tills den konstgjorda andningen medfort, att patienten kan andas spontant. Da omstalles andnings- apparaten till det lage i vilket syrgas -Whores ventilanordningen i man av patientens be-hay, varefter den som handhar anlaggningen slutar att paverka manoverknappen 27. Eftersom nu intet overtryck fOreligger i inlopps- kammaren 14, kommer membranet 20 att strava att inta ett neutralt lage i vilket ventiltallriken 40 ligger mellan satena 19 och 34 utan att dock ligga an mot nagotdera, varfor bade ventiloppningen 18 och avloppet till den omgivande atmosfaren dro oppna. Nar patienten andas in uppstar ett undertryck i utloppsoch inloppskamrarna och membranet 20 sugs mat, varvid ventiltallriken 40 fares mot satet 34 och sluter avloppet till omgivningen och hell oppnar ventiloppningen 18. Detta lage visas i fig. 2. Gas frau andningsapparaten kan darefter stromma direkt till patienten. Nar patienten andas ut, upptrader ett litet overtryck i inlopps- och utloppskamrarna, och membranet 20 pressas utat, varvid ventiltallriken 40 fors in mot satet 19 och stanger ventiloppningen 18, varvid gasstrOmmen till patienten bryts och avloppet till omgivningen oppnas, sa att utandning kan ske. Detta lage hos ventilanordningen visas i fig. 3. This course is repeated periodically, until the artificial respiration brings the patient can breathe spontaneously. Then the respiratory the device to the position in which the oxygen -Whores valve device in man of the patient's be-hay, after which the person handling the system stops actuating the control button 27. Since now there is no overpressure in the inlet- chamber 14, the diaphragm 20 will strive to assume a neutral position in which the valve plate 40 lies between the seats 19 and 34 without, however, abutting against either, so that both the valve opening 18 and the drain to the surrounding atmosphere will open. When the patient inhales, a negative pressure arises in the outlet and inlet chambers and the diaphragm 20 sucks food, whereby the valve plate 40 is moved towards the seat 34 and closes the drain to the environment and opens the valve opening 18. This layer is shown in Fig. 2. The gas from the respirator can then flow directly to patients. When the patient exhales, a slight overpressure occurs in the inlet and outlet chambers, and the diaphragm 20 is pressed outwards, whereby the valve plate 40 is pushed towards the seat 19 and closes the valve opening 18, whereby the gas flow to the patient is broken and the drain to the surroundings is opened, so that exhalation can take place. This layer of the valve device is shown in Fig. 3.

Om patienten, nar andningsapparaten är in-stand for att ge en kontinuerlig gasstrom under overtryck, plotsligt blir i stand att andas spontant och forsoker inhalera, nar manoverknappen 27 icke ar intryckt och ventiloppningen 18 salunda Or stangd, kommer det obetydliga undertryck, som erhMles i utloppskammaren 15 vid patientens inandningsforsok att vara tillrackligt for att bringa ventiltallriken 40 att glida ned pa ventilspincleln 27 mot verkan av fjadern 42, varigenom salunda gas kan stromma till patienten. If the patient, when the ventilator is able to give a continuous gas flow under overpressure, suddenly becomes able to breathe spontaneously and tries to inhale when the control button 27 is not pressed and the valve opening 18 is thus closed, the insignificant negative pressure obtained in the outlet chamber 15 in the patient's inhalation attempts to be sufficient to cause the valve plate 40 to slide down on the valve stem 27 against the action of the spring 42, whereby saliva gas can flow to the patient.

I fig. 4 och 5 visas en annan utforingsform av en ventilanordning av det i fig. 1-3 visa-de slaget. Vid denna forefinnes emellertid en ejektoranordning, med vilken ett obetydligt undertryck alstras i utloppskammaren 15 under utandningsfasen, nar apparaten ãr installd for overtrycksandning, sd aft tomningen av patientens lungor underlattas. For detta Ondamal ãr anden av ventilspindeln 24 utford som ett mnnstycke med en kanal 45, som ansluter till ett tvargaende hal 46 med oppningar 47, som ligga mom inloppskammaren 14, nar ventiltallriken 40 Egger an mot satet 19 och ventiloppningen 18 är sluten. Detta munstycke samverkar med en dysa 48, som bildar en uppatriktad forlangning av backventilsatet 35 och slutar Mom roret 33. Kanalen 45 ligger i linje med dysan 48 och styrs i donna riktning av en med hM forsedd platta 19, som är fast pa ventilspindeln 21 med muttern 43 och kan glida i rOret 33. Ventiltallriken 40 ar forsedd med en uppat riktad krage 50, som sinter oppningarna 47, nar ventiltallriken 40 slat' an mot ansatsen 41. I detta utfOrande är ansatsen 41 anordnad pa ett sadant stalle pa spindeln 24, att Oppningarlia 47 icke slutas ,av kragen 50, nar ventiltallriken 40 ligger an mot satet 19 och ventiloppningen 18 ár stangd. Figures 4 and 5 show another embodiment of a valve device of the type shown in Figures 1-3. In this case, however, there is an ejector device with which an insignificant negative pressure is generated in the outlet chamber 15 during the exhalation phase, when the apparatus is set up for positive pressure breathing, so that the emptying of the patient's lungs is facilitated. For this purpose, the spirit of the valve stem 24 is challenged as a nozzle with a channel 45, which connects to a transverse hall 46 with openings 47, which lie opposite the inlet chamber 14, when the valve plate 40 urges against the seat 19 and the valve opening 18 is closed. This nozzle cooperates with a nozzle 48, which forms an upwardly directed extension of the non-return valve set 35 and closes the Mom tube 33. The channel 45 is in line with the nozzle 48 and is guided in this direction by a plate 19 provided with hM, which is fixed to the valve stem 21 with the nut 43 and can slide in the tube 33. The valve plate 40 is provided with an upwardly directed collar 50, which sinter the openings 47, when the valve plate 40 abuts against the shoulder 41. In this embodiment, the shoulder 41 is arranged in such a position on the spindle 24 that the opening hole 47 is not closed, by the collar 50, when the valve plate 40 abuts the seat 19 and the valve opening 18 is closed.

Under utandningsfasen av en andningsperiod vid overtrycksandning strommar den, ndr ventiloppningen 18 är stangd, under tryck std.- ende gasen frail inloppskammaren 14 genom kanalen 4 och intranger som strale i dysan 48, innan den gar vidare ut till den omgivande atmosfaren genom backventilen. Darvid upptrader ett visst mindre undertryck i utloppskammaren 15, vilket underlfittar utandningen (fig. 4). During the exhalation phase of a breathing period during overpressure breathing, when the valve opening 18 is closed, it flows, under pressure std.- the only gas frail the inlet chamber 14 through the channel 4 and penetrates as a jet into the nozzle 48, before proceeding to the surrounding atmosphere through the non-return valve. Thereby a certain smaller negative pressure occurs in the outlet chamber 15, which underpins the exhalation (Fig. 4).

Under inandningsfasen Or ventiltallriken 40 av fjadern 42 ford utmed ventilspindeln 24 uppat, sa att kragen 50 slar an mot ansatsen 41, varvid oppningarna 47 aro stangda. Darmed forhindras gasforlust under derma andningsfas (fig. 5). During the inhalation phase, the valve plate 40 of the spring 42 travels along the valve stem 24 up, so that the collar 50 abuts against the shoulder 41, the openings 47 being closed. This prevents gas loss during this breathing phase (Fig. 5).

Claims (1)

Patentansprak: 1. Ventilanordning for reglering av en inhalationsgasstrom till en patient, vilken anordning innefattar en inloppskammare (14), som dr forsedd med ett inlopp, avsett att ansintas till en andningsapparat for inhalations-gas med efter val kontinuerlig tillforsel av gas under overtryck eller tillforsel i beroende av behovet hos patienten, och som Over en i en ventil ingaende oppning (18) Or anslutbar till en utloppskammare (15) med ett utlopp (17), som är avsett att anslutas till en ansiktsmask eller annat medel for tillforsel av inhalations-gas till patienten, och tried en kanal (33, 39; 39, 48), som star i forbindelse med den omgivande atmosfaren Over en mot derma Oppnande baekventil (35, 36), kannetecknad dãrav, att ett tryckkansligt organ (20), pa sin ena sida paverkat trycket i inloppskammaren (14) och pa sin andra sida av atmosfartrycket, uppbar en i ventilen (18, 19, 34, 401 ingaende ventilkropp (40), som i beroende av i in- och utloppskamrarna (14 resp. 15) radande tryck stanger resp. Oppnar ventilOppningen (18) resp. kanalen (33, 39; 39, 48), och är anordnat med ett manoverdon (27), medelst vilket ventilkroppen (40) manuellt kan sa forflyttas, att ventiloppningen (18) oppnas och kanalen. (33) stanges. 2. Ventilanordning enligt patentanspraket 1, kannetecknad darav, att den som en ventiltallrik (40) utformade ventilkroppen Or fOr- 4— — skjutbart anordnad pa en ay det tryckkansliga organet (20) buren ventilspindel (24) under inverkan ay en fjader (42), som paverkar ventiltallriken (40) i riktning mot ventilOppningen (18) slutande lage och medger yentiltallrikens forskjutning till yentiloppningen (18) oppnande lage under inverkan ay yisst undertryek i utloppskammaren (15) relativt inloppskanunaren (14). 3. Ventilanordning enligt nagot ay foregaende patentanspra, kannetecknad ay organ (45, 48) f5r astadkommande av ett undertryck I utloppskammaren (15) under utandningsfasen yid installning ay andningsapparaten for overtrycksandning, i och f8r underlattande av tomningen ay patientens lungor.Patent claim: 1. A valve device for regulating an inhalation gas flow to a patient, which device comprises an inlet chamber (14), which is provided with an inlet, intended to be sensitized to an inhalation gas breathing apparatus with optionally continuous supply of gas under overpressure or supply depending on the need of the patient, and as over an opening (18) accessible in a valve or connectable to an outlet chamber (15) with an outlet (17), which is intended to be connected to a face mask or other means for supplying inhalation gas to the patient, and threaded a channel (33, 39; 39, 48), which communicates with the surrounding atmosphere, over a beak valve (35, 36) opening toward it, can be characterized in that a pressure sensing means (20), on its one side affected the pressure in the inlet chamber (14) and on its other side of the atmospheric pressure, a valve body (40) entering the valve (18, 19, 34, 401), which depending on the inlet and outlet chambers (14 resp. 15) radande pressure rods resp. Opens the valve opening (18) resp. the channel (33, 39; 39, 48), and is provided with an actuator (27), by means of which the valve body (40) can be moved so manually that the valve opening (18) is opened and the channel. (33) stanges. Valve device according to claim 1, characterized in that the valve body (40) designed as a valve plate (40) is slidably arranged on a valve spindle (24) carried on the pressure-sensitive member (20) under the action of a spring (42). , which actuates the valve plate (40) in the direction of the closing opening of the valve opening (18) and allows the displacement of the valve plate to the opening opening of the valve opening (18) under the influence of a slight negative pressure in the outlet chamber (15) relative to the inlet gun (14). Valve device according to any one of the preceding claims, characterized by means (45, 48) for producing a negative pressure in the outlet chamber (15) during the exhalation phase during installation of the respiratory device for positive pressure breathing, in and for facilitating the emptying of the patient's lungs. 1. Ventilanordning enligt patentanspraket 3, kannetecknad daray, att namnda organ (45, 48) for astadkommande ay ett undertryck i utloppskammaren utgores ay en ejektoranordning med ett i forbintlelse med inloppskammaren (14) staende munstycke (45), som utmynnar I utloppskammaren yasentligen mitt for och i linje med en diffusor (48) och som under utandningsfasen ay andningsperioden under oyertrycksandning astadkommer en gasstrale genom diffusorn, astadkommande ett undertryck i utloppskammaren. Anfiirda publikationer: Patent skrifter fran Frankrike 1 105 803; Storhritannien 746 887.Valve device according to claim 3, characterized in that said means (45, 48) for producing a negative pressure in the outlet chamber are constituted by an ejector device with a nozzle (45) standing in connection with the inlet chamber (14), which opens into the outlet chamber yas. and in line with a diffuser (48) and which during the exhalation phase of the breathing period during oyer pressure breathing produces a gas jet through the diffuser, creating a negative pressure in the outlet chamber. Cited publications: Patents from France 1,105,803; Great Britain 746 887.
SE298958A 1957-04-24 1958-03-27 Valve device for regulating an inhalation gas stream to a patient SE179005C1 (en)

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GB1307557A GB826280A (en) 1957-04-24 1957-04-24 Valve means for controlling the flow of inhalant gas to a patient

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GB (1) GB826280A (en)
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US2893381A (en) 1959-07-07
GB826280A (en) 1959-12-31
FR1205518A (en) 1960-02-03
DE1185338B (en) 1965-01-14
NL99997C (en) 1961-12-15

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